PUREBURG Replacement Filter Compatible with Blueair Blue Signature SP4i Air Purifier, H13 HEPA Activated Charcoal 2-in-1 For Air Clean Dust VOCs Odor

["1-Pack , H13 HEPA Activated Charcoal 2-in-1 Filter","Compatible with Blueair Blue Signature SP4i Air Purifier","H13 HEPA filter captures up to 99.97% of airborne particles as small as 0.3 microns, including dust, pet dander, and other fine particles. An activated Charcoal layer helps absorb VOCs, smoke, PM2.5, and common household odors, contributing to fresher indoor air.","Please replace regularly to keep your machine fresh and clean.","Top Notch Quality Used for Maximum Customer Satisfaction Guaranteed. Every Product made by PUREBURG is Tested through Rigid Examinations and QC Procedures."]